Gross-Glenn K, Rothenberg S
Int J Neurosci. 1984 Aug;24(1):23-35. doi: 10.3109/00207458409079531.
Visual thresholds for identification of briefly flashed, lateralized letters were obtained for dyslexics and normal readers, age 11-15 years. Subjects were also tested for ability to localize tactile stimuli on the fingers and transfer information intermanually, a task failed by callosal agenesis patients (Dennis, 1976). Dyslexics differed significantly from normals on both tasks. Half the dyslexics demonstrated high threshold asymmetry across hemifields and many tactile localization errors, a pattern suggesting an "interhemispheric transfer deficit" as a cause of reading failure. Despite equally severe initial handicaps, dyslexics showing low, symmetric thresholds and few tactile errors, showed more reading improvement than did the others.
针对11至15岁的诵读困难者和正常阅读者，获取了他们识别短暂闪现的、呈偏侧化字母的视觉阈值。还对受试者进行了手指触觉刺激定位及双手间信息传递能力的测试，胼胝体发育不全患者无法完成这项任务（丹尼斯，1976年）。诵读困难者在这两项任务上与正常人有显著差异。一半的诵读困难者表现出跨半视野的高阈值不对称以及许多触觉定位错误，这种模式表明“半球间传递缺陷”是阅读障碍的一个原因。尽管最初的障碍同样严重，但视觉阈值低且对称、触觉错误少的诵读困难者比其他诵读困难者在阅读方面的进步更大。
